Remove explicit keyword from multi-argument constructors

ui/gfx/gl/gl_surface_egl.h

Index: ui/gfx/gl/gl_surface_egl.h
diff --git a/ui/gfx/gl/gl_surface_egl.h b/ui/gfx/gl/gl_surface_egl.h
index 19e7f4feefcc7492cdc5c73cd42133264b1cd38c..1b03a75377c51d649df8ed6ebd0e9717bab514c2 100644
--- a/ui/gfx/gl/gl_surface_egl.h
+++ b/ui/gfx/gl/gl_surface_egl.h
@@ -49,8 +49,7 @@ protected:
 // Encapsulates an EGL surface bound to a view.
 class NativeViewGLSurfaceEGL : public GLSurfaceEGL {
  public:
-  explicit NativeViewGLSurfaceEGL(bool software,
-                                  gfx::PluginWindowHandle window);
+  NativeViewGLSurfaceEGL(bool software, gfx::PluginWindowHandle window);
   virtual ~NativeViewGLSurfaceEGL();
 
   // Implement GLSurface.
@@ -71,7 +70,7 @@ class NativeViewGLSurfaceEGL : public GLSurfaceEGL {
 // Encapsulates a pbuffer EGL surface.
 class PbufferGLSurfaceEGL : public GLSurfaceEGL {
  public:
-  explicit PbufferGLSurfaceEGL(bool software, const gfx::Size& size);
+  PbufferGLSurfaceEGL(bool software, const gfx::Size& size);
   virtual ~PbufferGLSurfaceEGL();
 
   // Implement GLSurface.