Update GPU memory buffers to use StrideInBytes internally.

ui/gl/gl_image_memory.h

Index: ui/gl/gl_image_memory.h
diff --git a/ui/gl/gl_image_memory.h b/ui/gl/gl_image_memory.h
index fd659e76e58b221b91dcddff360ae6fe8a377723..a50a38064b1574ad55f571bb76581e9922d9399f 100644
--- a/ui/gl/gl_image_memory.h
+++ b/ui/gl/gl_image_memory.h
@@ -13,6 +13,7 @@
 #include <EGL/eglext.h>
 #endif
 
+#include "base/numerics/safe_math.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
 namespace gfx {
@@ -21,7 +22,9 @@ class GL_EXPORT GLImageMemory : public GLImage {
  public:
   GLImageMemory(const gfx::Size& size, unsigned internalformat);
 
-  static size_t BytesPerPixel(gfx::GpuMemoryBuffer::Format format);
+  static bool StrideInBytes(size_t width,
+                            gfx::GpuMemoryBuffer::Format format,
+                            size_t* stride_in_bytes);
 
   bool Initialize(const unsigned char* memory,
                   gfx::GpuMemoryBuffer::Format format);