Moved the compiler test initialization and tear down into a gtest environement class.
Moved the compiler test initialization and tear down into a gtest environement class.

Change-Id: I1fd05a188830567b04b9341793e64488da027894
Reviewed-on: https://chromium-review.googlesource.com/179353
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@chromium.org>
Commit-Queue: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@chromium.org>
Tested-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@chromium.org>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Commit-Queue: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>

ghostoy/angle,ecoal95/angle,mybios/angle,csa7mdm/angle,mybios/angle,nandhanurrevanth/angle,vvuk/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,mrobinson/rust-angle,nandhanurrevanth/angle,mlfarrell/angle,mrobinson/rust-angle,android-ia/platform_external_chromium_org_third_party_angle,bsergean/angle,xin3liang/platform_external_chromium_org_third_party_angle,xin3liang/platform_external_chromium_org_third_party_angle,jgcaaprom/android_external_chromium_org_third_party_angle,jgcaaprom/android_external_chromium_org_third_party_angle,bsergean/angle,mikolalysenko/angle,domokit/waterfall,mybios/angle,MIPS/external-chromium_org-third_party-angle,mlfarrell/angle,ecoal95/angle,MIPS/external-chromium_org-third_party-angle,mikolalysenko/angle,xin3liang/platform_external_chromium_org_third_party_angle,ghostoy/angle,mrobinson/rust-angle,ppy/angle,ppy/angle,crezefire/angle,mlfarrell/angle,csa7mdm/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,crezefire/angle,MSOpenTech/angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,nandhanurrevanth/angle,bsergean/angle,larsbergstrom/angle,larsbergstrom/angle,ppy/angle,vvuk/angle,android-ia/platform_external_chromium_org_third_party_angle,MIPS/external-chromium_org-third_party-angle,larsbergstrom/angle,android-ia/platform_external_chromium_org_third_party_angle,larsbergstrom/angle,ppy/angle,xin3liang/platform_external_chromium_org_third_party_angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,ghostoy/angle,mrobinson/rust-angle,jgcaaprom/android_external_chromium_org_third_party_angle,android-ia/platform_external_chromium_org_third_party_angle,mlfarrell/angle,vvuk/angle,domokit/waterfall,mikolalysenko/angle,MIPS/external-chromium_org-third_party-angle,mybios/angle,ghostoy/angle,MSOpenTech/angle,crezefire/angle,ecoal95/angle,bsergean/angle,crezefire/angle,MSOpenTech/angle,ecoal95/angle,vvuk/angle,ecoal95/angle,csa7mdm/angle,MSOpenTech/angle,nandhanurrevanth/angle,mrobinson/rust-angle,csa7mdm/angle,jgcaaprom/android_external_chromium_org_third_party_angle,mikolalysenko/angle