Remove string-getting methods from WebGraphicsContext3D.

third_party/WebKit/Source/modules/webgl/GLStringQuery.h

+// Copyright 2010 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.
+
+#ifndef GLStringQuery_h
+#define GLStringQuery_h
+
+#include "gpu/command_buffer/client/gles2_interface.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+// Performs a query for a string on GLES2Interface and returns a WTF::String. If
+// it is unable to query the string, it wil return an empty WTF::String.
+class GLStringQuery {
+public:
+    struct ProgramInfoLog {
+        static void LengthFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint* length)
+        {
+            return gl->GetProgramiv(id, GL_INFO_LOG_LENGTH, length);
+        }
+        static void LogFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint length, GLint* returnedLength, LChar* ptr)
+        {
+            return gl->GetProgramInfoLog(id, length, returnedLength, reinterpret_cast<GLchar*>(ptr));
+        }
+    };
+
+    struct ShaderInfoLog {
+        static void LengthFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint* length)
+        {
+            gl->GetShaderiv(id, GL_INFO_LOG_LENGTH, length);
+        }
+        static void LogFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint length, GLint* returnedLength, LChar* ptr)
+        {
+            gl->GetShaderInfoLog(id, length, returnedLength, reinterpret_cast<GLchar*>(ptr));
+        }
+    };
+
+    struct TranslatedShaderSourceANGLE {
+        static void LengthFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint* length)
+        {
+            gl->GetShaderiv(id, GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE, length);
+        }
+        static void LogFunction(gpu::gles2::GLES2Interface* gl, GLuint id, GLint length, GLint* returnedLength, LChar* ptr)
+        {
+            gl->GetTranslatedShaderSourceANGLE(id, length, returnedLength, reinterpret_cast<GLchar*>(ptr));
+        }
+    };
+
+    GLStringQuery(gpu::gles2::GLES2Interface* gl) : m_gl(gl) {}
+
+    template<class Traits>
+    WTF::String Run(GLuint id) {
+        GLint length = 0;
+        Traits::LengthFunction(m_gl, id, &length);
+        if (!length)
+            return WTF::emptyString();
+        LChar* logPtr;
+        RefPtr<WTF::StringImpl> nameImpl = WTF::StringImpl::createUninitialized(length, logPtr);
+        GLsizei returnedLength = 0;
+        Traits::LogFunction(m_gl, id, length, &returnedLength, logPtr);
+        // The returnedLength excludes the null terminator. If this check wasn't
+        // true, then we'd need to tell the returned String the real length.
+        DCHECK_EQ(returnedLength + 1, length);
+        return String(nameImpl.release());
+    }
+
+private:
+    gpu::gles2::GLES2Interface* m_gl;
+};
+
+} // namespace blink
+#endif // GLStringQuery_h