gfx: Use unsigned strides for gpu memory buffers.

gpu/command_buffer/tests/gl_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/tests/gl_manager.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stddef.h>
@@ skipping 66 matching lines @@
     DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
     return reinterpret_cast<uint8_t*>(&bytes_->data().front()) +
            gfx::BufferOffsetForBufferFormat(size_, format_, plane);
   }
   void Unmap() override {
     DCHECK(mapped_);
     mapped_ = false;
   }
   gfx::Size GetSize() const override { return size_; }
   gfx::BufferFormat GetFormat() const override { return format_; }
-  int stride(size_t plane) const override {
+  uint32_t stride(size_t plane) const override {
     DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
     return gfx::RowSizeForBufferFormat(size_.width(), format_, plane);
   }
   gfx::GpuMemoryBufferId GetId() const override {
     NOTREACHED();
     return gfx::GpuMemoryBufferId(0);
   }
   gfx::GpuMemoryBufferHandle GetHandle() const override {
     NOTREACHED();
     return gfx::GpuMemoryBufferHandle();
@@ skipping 37 matching lines @@
     DCHECK(mapped_);
     DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
     return IOSurfaceGetBaseAddressOfPlane(iosurface_, plane);
   }
   void Unmap() override {
     DCHECK(mapped_);
     mapped_ = false;
   }
   gfx::Size GetSize() const override { return size_; }
   gfx::BufferFormat GetFormat() const override { return format_; }
-  int stride(size_t plane) const override {
+  uint32_t stride(size_t plane) const override {
     DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
     return IOSurfaceGetWidthOfPlane(iosurface_, plane);
   }
   gfx::GpuMemoryBufferId GetId() const override {
     NOTREACHED();
     return gfx::GpuMemoryBufferId(0);
   }
   gfx::GpuMemoryBufferHandle GetHandle() const override {
     NOTREACHED();
     return gfx::GpuMemoryBufferHandle();
@@ skipping 474 matching lines @@
 
   // Something went wrong, just run the callback now.
   callback.Run();
 }
 
 bool GLManager::CanWaitUnverifiedSyncToken(const gpu::SyncToken* sync_token) {
   return false;
 }
 
 }  // namespace gpu