Add comments to ArrayBoundsClamper about why 'clamp' was not used to do the bounds clamping.
Add comments to ArrayBoundsClamper about why 'clamp'
was not used to do the bounds clamping.

BUG=397



git-svn-id: 947ae547afacb859f3991e003b9d6feb04be57d7@1720 736b8ea6-26fd-11df-bfd4-992fa37f6226

spurious/angle-mirror,android-ia/platform_external_chromium_org_third_party_angle,MIPS/external-chromium_org-third_party-angle,xin3liang/platform_external_chromium_org_third_party_angle,Mustaavalkosta/android_external_angle,spurious/angle-mirror,android-ia/platform_external_chromium_org_third_party_angle,Mustaavalkosta/android_external_angle,jgcaaprom/android_external_chromium_org_third_party_angle,MIPS/external-chromium_org-third_party-angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,Mustaavalkosta/android_external_angle,MIPS/external-chromium_org-third_party-angle,Mustaavalkosta/android_external_angle,xin3liang/platform_external_chromium_org_third_party_angle,android-ia/platform_external_chromium_org_third_party_angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,spurious/angle-mirror,xin3liang/platform_external_chromium_org_third_party_angle,xin3liang/platform_external_chromium_org_third_party_angle,jgcaaprom/android_external_chromium_org_third_party_angle,geekboxzone/lollipop_external_chromium_org_third_party_angle,spurious/angle-mirror,android-ia/platform_external_chromium_org_third_party_angle,jgcaaprom/android_external_chromium_org_third_party_angle,MIPS/external-chromium_org-third_party-angle,jgcaaprom/android_external_chromium_org_third_party_angle