Fixed bug in allocation of temporary scanline during frame buffer readback.

BUG=174921


Review URL: https://chromiumcodereview.appspot.com/12250017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182088 0039d316-1c4b-4281-b951-d872f2087c98

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.cc

@@ -706,10 +706,6 @@ void WebGraphicsContext3DInProcessCommandBufferImpl::reshape(
   // ClearContext();
 
   gl_->ResizeCHROMIUM(width, height);
-
-#ifdef FLIP_FRAMEBUFFER_VERTICALLY
-  scanline_.reset(new uint8[width * 4]);
-#endif  // FLIP_FRAMEBUFFER_VERTICALLY
 }
 
 WebGLId WebGraphicsContext3DInProcessCommandBufferImpl::createCompositorTexture(
@@ -731,9 +727,10 @@ void WebGraphicsContext3DInProcessCommandBufferImpl::FlipVertically(
     uint8* framebuffer,
     unsigned int width,
     unsigned int height) {
-  uint8* scanline = scanline_.get();
-  if (!scanline)
+  if (width == 0)
     return;
+  scanline_.resize(width * 4);
+  uint8* scanline = &scanline_[0];
   unsigned int row_bytes = width * 4;
   unsigned int count = height / 2;
   for (unsigned int i = 0; i < count; i++) {

webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h

@@ -533,7 +533,7 @@ class WEBKIT_GPU_EXPORT WebGraphicsContext3DInProcessCommandBufferImpl
   std::vector<WGC3Denum> synthetic_errors_;
 
 #ifdef FLIP_FRAMEBUFFER_VERTICALLY
-  scoped_array<uint8> scanline_;
+  std::vector<uint8> scanline_;
   void FlipVertically(uint8* framebuffer,
                       unsigned int width,
                       unsigned int height);