Add README in tools/drmemory for using Dr. Memory

Add README in tools/drmemory for using Dr. Memory

R=tsepez@chromium.org
BUG=PDFium:238
Committed: https://pdfium.googlesource.com/pdfium/+/7e413d168beba325078aa4b484729ad22919a2c3

[Tom Sepez, 2015-11-25 21:45:01]

https://codereview.chromium.org/1471073011/diff/1/tools/drmemory/README
File tools/drmemory/README (right):

https://codereview.chromium.org/1471073011/diff/1/tools/drmemory/README#newco...
tools/drmemory/README:42: ### Run your application with Dr. Memory
Are the steps different for linux/mac?  the syntax will be (.exe etc). Maybe
need another section under here to cover both.

[zhaoqin, 2015-11-25 21:50:43]

zhaoqin@google.com changed reviewers:
+ zhaoqin@google.com

[zhaoqin, 2015-11-25 21:50:44]

https://codereview.chromium.org/1471073011/diff/1/tools/drmemory/README
File tools/drmemory/README (right):

https://codereview.chromium.org/1471073011/diff/1/tools/drmemory/README#newco...
tools/drmemory/README:42: ### Run your application with Dr. Memory
On 2015/11/25 21:45:01, Tom Sepez wrote:
> Are the steps different for linux/mac?  the syntax will be (.exe etc). Maybe
> need another section under here to cover both.

Dr. Memory currently only supports 32-bit (64-bit port in progress), where most
Linux and Mac applications are 64-bit. Also we only add the
DrMemory-Windows-sfx.exe for testing pdfium on Windows.

Do you think if we should specify it is Windows only somewhere or add a section
for Linux/Mac usage?

[Tom Sepez, 2015-11-26 00:03:27]

lgtm

https://codereview.chromium.org/1471073011/diff/20001/tools/drmemory/README
File tools/drmemory/README (right):

https://codereview.chromium.org/1471073011/diff/20001/tools/drmemory/README#n...
tools/drmemory/README:10: Windows, Linux, or Mac on commodity IA-32 and AMD64
hardware.
maybe say: AMD64 (forthcoming)

[zhaoqin1, 2015-11-30 19:50:14]

Description was changed from

==========
Add README in tools/drmemory for using Dr. Memory

R=tsepez@chromium.org
BUG=PDFium:238
==========

to

==========
Add README in tools/drmemory for using Dr. Memory

R=tsepez@chromium.org
BUG=PDFium:238

Committed:
https://pdfium.googlesource.com/pdfium/+/7e413d168beba325078aa4b484729ad22919...
==========

[zhaoqin1, 2015-11-30 19:50:15]

Committed patchset #4 (id:60001) manually as
7e413d168beba325078aa4b484729ad22919a2c3 (presubmit successful).